Question

Class Diplopoda includes
(a) Centipedes
(b) Bipeds
(c) Millipedes
(d) Quadrupeds

Answer 1

Hint: The terrestrial, air-breathing organisms that feed on dead and decaying matter contain gnathochilarium, a modified maxilla. They are also called a thousand leggers.

Complete answer:
The terrestrial, air-breathing, animals that feed on decaying plant materials are present in the class Diplopoda. The body is divided into head and trunk. Paired antennae, mandibles, and maxillae are present on the head. Maxillae are modified into gnathochilarium. Each trunk segment bears two pairs of legs. The trachea is the respiratory organs. Millipedes or thousand leggers are included in diplopods. Example: spirostreptus, julus.

Additional Information: - The largest phylum in the animal kingdom arthropods is classified into three subphylums namely trilobita, Chelicerata, and mandibulate. Marine arthropods that are extinct are placed in the phylum trilobita. They have numerous appendages that are similar and biramous. Examples: triarthrus, dalmanites.
- Subphylum Chelicerata is classified into two classes namely Xiphosura, and Arachnida
- Subphylum mandibulata is classified into four classes namely crustacea, Chilopoda, Diplopoda, and Insecta.
- Aquatic organisms that contain unique features i.e, the presence of two pairs of antennules and antennae in the cephalic region.
- Centipedes or a hundred leggers are included in the class Chilopoda. They are air-breathing, terrestrial, and carnivorous organisms. The trachea is the respiratory organs.
- Malpighian tubules are the excretory organs in both Chilopoda, Diplopoda, and Insecta.
So, the correct answer is ’millipedes’.

Note: -The largest phylum in the kingdom Animalia i.e, Arthropoda consists of many species of organisms that are economically important Ex, Apis, Bombyx, common pathogen vectors Ex, Anopheles, culex, gregarious pest ex, locuta, and living fossils ex, Limulus.
-Among all the classes of Arthropoda, class Insecta is the largest class.